Question

If one zero of the quadratic polynomial x2 + 3x + k is 2, then value of k is
Options
(a) - 10
(b) 10
(06
(d) -6​

Answer 1

One zeros = 2

Equation is x² + 3x + k

If zeros is 2

Then, x = 2

Put value of x in equation:

→ (2)² + 3 × (2) + k = 0

→ 4 + 6 + k = 0

→ 10 + k = 0

→ k = -10

Value of k is -10.